Site Description The Roman settlement at Neath has traditionally been identified as the 'Nidum' of the Antonine Itinerary. It occupies a low plateau on the western bank of the River Neath and the first fort, covering approximately 3.3ha, was probably constructed between AD 75 and 80. This was followed by the construction of a slightly smaller fort of 2.3ha between AD 80 - 90 which was continuously occupied until abandonment around AD 125. It was re-occupied between AD 140 and 170, and there is also evidence of a later military phase between AD 275 and 320.

The southern and eastern gates have been exposed and preserved, whilst the north-west side of the fort defences are visible as low earthworks across a school playing field. Extensive, though fragmentary, remains of extra-mural settlement features have been recorded.